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Originally Posted by dleviwing DHiMac;
If one interprets Einstein's GR properly, it is the physical clock made out of physical matter that slows down as you accelerate. We do not have a clock that can reproduce the true concept of "time" and thus we use GR. An example is to take an electric clock that references to the 60 Hz line frequency and take it to Japan where the line frequency is 50 Hz. A slow physical time reference does not constitute travel in time. |
I have to agree here with you dleviwing. Time travel is not possible because time is connected to space. If time travel were possible it would be an extremely dangerous business since moving back in time would then have space move in time as well. If you are in a time machine and wish to remain who you are at that moment (ergo not move back in time with your physical self), your physical self will end up in an undesired spot: with the earth moving backward (or forward) but not you, you end up hanging in your time machine in space if your lucky, or you find yourself transported to a rocky lavaly place inside our planet (maybe that's where all the people went who already tried travelling through time?).